是男人就下100层【第一层】——高仿微信界面（4）

上一篇《是男人就下100层【第一层】——高仿微信界面（3）》中我们完成了登录，这一篇看完成登录后的一个短暂加载和引导界面。

加载界面：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >  

    <RelativeLayout
        android:layout_width="180dp"
        android:layout_height="180dp"
        android:layout_centerInParent="true"
        android:background="@drawable/loading_bg" >

        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:gravity="center"
            android:orientation="vertical" >
            
            <ProgressBar
        		android:id="@+id/progressBar1"
        		style="?android:attr/progressBarStyleLarge"
        		android:layout_width="wrap_content"
        		android:layout_height="wrap_content"        
        		android:layout_gravity="center_horizontal"
        		
         	/>
      
        	<TextView
        		android:layout_width="wrap_content"
        		android:layout_height="wrap_content"
        		android:text="正在登录"
       			android:layout_marginTop="10dp"
        		android:textColor="#fff"
        		android:textSize="20sp"
        />
        </LinearLayout>

    </RelativeLayout>

</RelativeLayout>

定义了一个ProgressBar，效果如下：

再来看看引导界面的实现

<?xml version="1.0" encoding="utf-8"?>

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >  

   <android.support.v4.view.ViewPager
        android:id="@+id/whatsnew_viewpager"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center" > 
  
    </android.support.v4.view.ViewPager>  
    
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal"
        > 
        
         <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="bottom"
        	android:layout_marginBottom="30dp" 
        	android:gravity="center_horizontal"     >
            
            <ImageView
            	android:id="@+id/page0"
        		android:layout_width="wrap_content"
        		android:layout_height="wrap_content"        	     	
        		android:scaleType="matrix"
        		android:src="@drawable/page_now" />
            <ImageView
            	android:id="@+id/page1"
        		android:layout_width="wrap_content"
        		android:layout_height="wrap_content"
        		android:layout_marginLeft="10dp"        	     	
        		android:scaleType="matrix"
        		android:src="@drawable/page" />
            <ImageView
            	android:id="@+id/page2"
        		android:layout_width="wrap_content"
        		android:layout_height="wrap_content"
        		android:layout_marginLeft="10dp"           	     	
        		android:scaleType="matrix"
        		android:src="@drawable/page" />
            <ImageView
            	android:id="@+id/page3"
        		android:layout_width="wrap_content"
        		android:layout_height="wrap_content" 
        		android:layout_marginLeft="10dp"          	     	
        		android:scaleType="matrix"
        		android:src="@drawable/page" />
            <ImageView
            	android:id="@+id/page4"
        		android:layout_width="wrap_content"
        		android:layout_height="wrap_content" 
        		android:layout_marginLeft="10dp"          	     	
        		android:scaleType="matrix"
        		android:src="@drawable/page" />
            <ImageView
            	android:id="@+id/page5"
        		android:layout_width="wrap_content"
        		android:layout_height="wrap_content" 
        		android:layout_marginLeft="10dp"          	     	
        		android:scaleType="matrix"
        		android:src="@drawable/page" />           
            
        </LinearLayout>
        
       
    </LinearLayout>
    
	   
</FrameLayout>

在上面我们使用到了一个ViewPager组件，这个组件的作用是时图片可以左右滑动，使用方法详见：http://www.uml.org.cn/mobiledev/201211294.asp

定义的ViewPage的适配器以及下部的选中状态ImageView的设置如下：

package com.example.weixin.activity;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;

import com.example.weixin.R;

public class Whatsnew extends Activity {
	
	private ViewPager mViewPager;	
	private ImageView mPage0;
	private ImageView mPage1;
	private ImageView mPage2;
	private ImageView mPage3;
	private ImageView mPage4;
	private ImageView mPage5;
		
	private int currIndex = 0;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.whatsnew_viewpager);
        mViewPager = (ViewPager)findViewById(R.id.whatsnew_viewpager);        
        mViewPager.setOnPageChangeListener(new MyOnPageChangeListener());
       
        
        mPage0 = (ImageView)findViewById(R.id.page0);
        mPage1 = (ImageView)findViewById(R.id.page1);
        mPage2 = (ImageView)findViewById(R.id.page2);
        mPage3 = (ImageView)findViewById(R.id.page3);
        mPage4 = (ImageView)findViewById(R.id.page4);
        mPage5 = (ImageView)findViewById(R.id.page5);
        
      //将要分页显示的View装入数组中
        LayoutInflater mLi = LayoutInflater.from(this);
        View view1 = mLi.inflate(R.layout.whats1, null);
        View view2 = mLi.inflate(R.layout.whats2, null);
        View view3 = mLi.inflate(R.layout.whats3, null);
        View view4 = mLi.inflate(R.layout.whats4, null);
        View view5 = mLi.inflate(R.layout.whats5, null);
        View view6 = mLi.inflate(R.layout.whats6, null);
        
      //每个页面的view数据
        final ArrayList<View> views = new ArrayList<View>();
        views.add(view1);
        views.add(view2);
        views.add(view3);
        views.add(view4);
        views.add(view5);
        views.add(view6);
        
        //填充ViewPager的数据适配器
        PagerAdapter mPagerAdapter = new PagerAdapter() {
			
			@Override
			public boolean isViewFromObject(View arg0, Object arg1) {
				return arg0 == arg1;
			}
			
			@Override
			public int getCount() {
				return views.size();
			}

			@Override
			public void destroyItem(View container, int position, Object object) {
				((ViewPager)container).removeView(views.get(position));
			}
			
			
			
			@Override
			public Object instantiateItem(View container, int position) {
				((ViewPager)container).addView(views.get(position));
				return views.get(position);
			}
		};
		
		mViewPager.setAdapter(mPagerAdapter);
    }    
    

    public class MyOnPageChangeListener implements OnPageChangeListener {
		@Override
		public void onPageSelected(int arg0) {
			switch (arg0) {
			case 0:				
				mPage0.setImageDrawable(getResources().getDrawable(R.drawable.page_now));
				mPage1.setImageDrawable(getResources().getDrawable(R.drawable.page));
				break;
			case 1:
				mPage1.setImageDrawable(getResources().getDrawable(R.drawable.page_now));
				mPage0.setImageDrawable(getResources().getDrawable(R.drawable.page));
				mPage2.setImageDrawable(getResources().getDrawable(R.drawable.page));
				break;
			case 2:
				mPage2.setImageDrawable(getResources().getDrawable(R.drawable.page_now));
				mPage1.setImageDrawable(getResources().getDrawable(R.drawable.page));
				mPage3.setImageDrawable(getResources().getDrawable(R.drawable.page));
				break;
			case 3:
				mPage3.setImageDrawable(getResources().getDrawable(R.drawable.page_now));
				mPage4.setImageDrawable(getResources().getDrawable(R.drawable.page));
				mPage2.setImageDrawable(getResources().getDrawable(R.drawable.page));
				break;
			case 4:
				mPage4.setImageDrawable(getResources().getDrawable(R.drawable.page_now));
				mPage3.setImageDrawable(getResources().getDrawable(R.drawable.page));
				mPage5.setImageDrawable(getResources().getDrawable(R.drawable.page));
				break;
			case 5:
				mPage5.setImageDrawable(getResources().getDrawable(R.drawable.page_now));
				mPage4.setImageDrawable(getResources().getDrawable(R.drawable.page));
				break;
			}
			currIndex = arg0;
			//animation.setFillAfter(true);// True:图片停在动画结束位置
			//animation.setDuration(300);
			//mPageImg.startAnimation(animation);
		}
		@Override
		public void onPageScrolled(int arg0, float arg1, int arg2) {
		}

		@Override
		public void onPageScrollStateChanged(int arg0) {
		}
	}
    public void startbutton(View v) {  
      	Intent intent = new Intent();
		intent.setClass(Whatsnew.this,WhatsnewDoor.class);
		startActivity(intent);
		this.finish();
      }  
    
}

最后的运行效果：